EP3679206B1 - Anti-fall safeguard with supporting base - Google Patents

Description

The invention relates to a fall protection device for people with a stand base, with which the fall protection device can be set up on a subsurface consisting of individual concrete slabs, the concrete slabs being provided with upwardly projecting reinforcing elements, and an anchor mast system connected to the stand base, on the free, Personal protective equipment (PPE) is attached to the upper end.

A fall protection device with a stand base is, for example, from the publication JP 2008 035 953 A or the utility model DE 20 2016 007 169.7 U1 known. As can be seen from this utility model, such generic fall protection devices are used wherever collective protection such as side protection cannot be used or where fall arrest devices such as safety nets appear inexpedient. The subject matter of this utility model is based on fall protection, which are designed like a crane and are provided with a mast system and a boom. In such safety devices, so-called personal protective devices "PPE" are arranged at the outer, upper end of the boom.

In the case of a fall arrest device in the form of a PSA, a safety rope is wound on a type of drum, which can be connected to a person with a type of hook. In the event of a fall or a jerky load on the safety rope, the drum is blocked so that the safety rope can no longer be unwound from the drum. If the safety rope is relieved again, the The drum is released again so that the person to be secured can move freely again. The main area of application of such Systems are mainly found in the so-called formwork construction for ceiling formwork. From such ceiling formwork, "shuttering boards" are placed on support structures, so that these shuttering boards as a whole form a type of "sub-floor" on which a concrete ceiling is poured at a later point in time. Such concrete ceilings have inner iron reinforcements, so that the shuttering boards, depending on the size of the concrete ceiling to be created, have to be supported over a large area in order to be able to place several shuttering boards distributed over a large area.

The utility model mentioned shows that one of the most frequently used methods is based on attaching the PPE to a jib crane with a stand base and a kind of anchor mast system in order to lead the safety rope from above to the person to be secured. This method has proven to be very useful.

The disadvantage of this system is that, in order to ensure stability, core sleeves or panels have to be included in the planning of the building project. Furthermore, these components represent a not inconsiderable cost factor. Since these components can no longer be removed from the load-bearing structure of the building (ready-made concrete ceiling), structural engineers are rather skeptical of this method.

Based on such systems in the form of a "simple crane", a fall protection system with a stand base and an anchor mast system of a special kind was created according to the utility model mentioned.

This special anchor mast system with its two mast elements that "kink" under load has proven to be very advantageous. However, it has been shown that the pedestal can "slide away" to the side with special surfaces. In this regard, the pedestal can be due to Do not set up its stand structure, which is directed towards the subsurface, on any particular subsurface.

In recent times, instead of the formwork boards mentioned above, prefabricated concrete elements with a thickness of about 6-8 cm have been used, which can be laid next to one another over a large area. This has the particular advantage that the support on the underside can take place over a much larger area, since the number of these concrete slabs is much smaller in order to cover the same concrete surface to be poured as the individual, much smaller shuttering boards.

Such concrete parts or concrete slabs are characterized in that they are already partially provided with reinforcing steel. These reinforcing steels project a few centimeters above the top of this concrete slab, so that the top of these concrete slabs does not form a uniform base. Furthermore, the coefficient of friction on these upwardly protruding iron reinforcement parts is very low, so that the fall protection with its base always tends to be displaced in the event of higher lateral loads.

Accordingly, the object of the invention is to design a fall protection device with a stand base in such a way that the entire anchor mast system is prevented from shifting to the side or slipping away with little effort.

The object is achieved according to the invention by the features of claim 1. Two or more safety ropes are provided, which can be brought into tension connections with the reinforcement elements of the concrete slabs. The safety ropes can be tensioned and the pedestal is secured immovably on the ground by tightening the safety rope.

The inventive design provides a fall protection with a stand base, in which the stand base, together with the applied anchor mast system, cannot safely be moved on a "ceiling formwork" consisting of a prefabricated concrete slab. For this purpose, according to the invention, two or more safety ropes are provided which can be brought into connection with the reinforcement elements of the concrete slabs. Furthermore, these safety ropes can also be tensioned so that the stand base is secured immovably on the ground by tightening the safety ropes. The safety ropes can be an integral part of the pedestal. However, since this in itself means a special type of construction effort for the pedestal, such cable securing devices can also be designed in a different manner.

Furthermore, it is provided according to the invention that the cable securing devices are provided with cable winches for tensioning, which are connected to the stand base directly or indirectly via upwardly projecting stand posts. With this configuration, in particular, the tensioning of the cable safety device can be carried out extremely easily, with the tensioning direction also being extremely simple due to the simple hanging and possibly automatic alignment of the cable winch.

Furthermore, it can be provided according to claim 2 that the cable safety devices with the cable winches and the support posts are part of a separate stand plate on which the stand base of the fall protection device can be set up in a stationary manner.

With this configuration, in particular, the rope protection for the entire anchor mast system or the entire fall protection is tion variably applicable. Does the subsurface allow the fall protection with its stand base for itself without? the risk of "slipping away" can be set up, as is the case, for example, on simple shuttering boards, a rope safety device is not required. Accordingly, the fall protection can be used in such a case without additional precautions.

However, if a substrate is provided, such as the concrete slabs described above with their upwardly protruding iron reinforcement parts, which have only extremely low adhesion to the base, an additional base plate can be provided between the base and these reinforcement parts of the concrete slabs, which with the cable safety devices and the winches and the associated support post is provided. Thanks to the additional or separate base plate, each fall protection device can be set up so that it cannot be displaced if necessary.

Furthermore, it can be provided according to claim 3 that the base plate consists of several ring-shaped ring segments, and that the ring segments are polygonal or circular, and that the ring segments are fixedly connected to one another via radially extending connecting struts. These ring segments can also consist of separate steel parts or steel plates in the circumferential direction, which together form these ring-shaped ring segments. The provision of these ring segments in particular results in a weight saving while at the same time having a large-area load-bearing capacity of the base plate. Accordingly, according to claim 4, the ring segments are at a radial distance from one another and, with their downwardly directed surface sections, form the contact surface for the pedestal of the fall protection device placed on the top.

Fig. 1

eine perspektivische Darstellung eines Standsockels eines Absturzsicherungssystems, welcher als integraler Bestandteil eine Standplatte sowie Seilsicherungen aufweist.

Fig. 2

eine Standplatte, auf welche der Standsockel nach Fig. 1 aufgestellbar ist, als separates Bauteil mit vertikal nach oben gerichteten Standpfosten, welche in ihrem oberen Endbereichen mit zugehörigen Seilwinden zum Abspannen von Seilsicherungen versehen sind.

Fig. 3

eine perspektivische Explosionsdarstellung eines Standsockels, einer Standplatte sowie einer unterhalb dieser Standplatte angeordneten Betonplatte mit nach oben vorstehenden Eisen-Armierungsteilen;

Fig. 4

die Absturzsicherung mit ihrem Standsockel sowie mit ihrer als Aufstandsfläche dienenden Standplatte sowie der Armierungsplatte aus Fig. 4 in auf der Betonplatte aufgestelltem Zustand.

The invention is explained in more detail below using an exemplary embodiment with the aid of the drawing. It shows:

Fig. 1

a perspective view of a stand base of a fall protection system, which has a stand plate and rope safety devices as an integral component.

Fig. 2

a stand plate on which the stand base after Fig. 1 can be set up as a separate component with vertically upwardly directed support posts, which are provided in their upper end areas with associated cable winches for tensioning cable safety devices.

Fig. 3

a perspective exploded view of a stand base, a stand plate and a concrete slab arranged below this stand plate with iron reinforcement parts protruding upwards;

Fig. 4

the fall protection with its base as well as with its base plate serving as a contact area and the reinforcement plate Fig. 4 when placed on the concrete slab.

Fig. 1 shows a perspective view of a pedestal 1, like this one in the fall protection according to FIG DE 20 2016 007 169.7 U1 is used. How out Fig. 1 As can be seen, this stand base 1 has a central mounting plate 2, which is used for fixed and rotatable mountings of an anchor mast system, as is described in the aforementioned German utility model. In this respect, reference is made here in full to the fall protection according to the utility model mentioned.

Next is off Fig. 1 It can be seen that the stand base 1 has recesses 3 and 4 opposite one another with respect to the mounting plate 2, in the edge regions of which vertically aligned stand posts 5, 6 and 7, 8 are respectively arranged. Next is off Fig. 1 recognizable that the base 1 on a kind of stand plate 10 is set up and is fixedly connected to it. The base 1 and the base plate 10 have polygonal, identically designed outer contours, so that the base 1 can be set up to fit on the base plate 10. The stand base 1 can be connected to the stand plate 10 in a fixed manner.

In the embodiment variant shown, the posts 5, 6 as well as 7 and 8 can be fixedly connected to the base plate 10 in the correspondingly shown position in the edge region of the two recesses 3 and 4 and not necessarily fixedly arranged on the base 1. However, both variants are also conceivable here.

If the posts 5, 6 or 7, 8 are directly connected to the base 1, the base 1 can be used together with the posts 5, 6 and 7, 8 without the additional base 10.

Next is off Fig. 1 it can be seen that the posts 5, 6, 7 and 8 are each provided with a cable winch 15, 16, 17 and 18 in their upper end area. These winches 15 to 18 are used to accommodate corresponding cable safety devices, which in Fig. 1 are not shown separately.

How out Fig. 1 is shown with respect to these winches 15, 16, 17 and 18, these have associated cable drums 19, 20, 21 and 22, which can be driven to rotate manually via corresponding hand cranks 23, 24, 25 and 26. These cranks 23, 24, 25, 26 can be locked so that ropes wound on the cable drums 19, 20, 21 and 22 (not shown in the drawing) can be tensioned so that the base 1 together with the base plate 10 against a substrate Slipping is secured.

This shows Fig. 2 a perspective view of a possible embodiment of a separate base plate 10, which is provided with the four posts 5, 6, 7 and 8 and their winches 15, 16, 17 and 18. It is off Fig. 2 It can be seen that this base plate 10 consists of two annular ring segments 30, 31 lying one inside the other and a central circular disk 32. The division of the base plate 10 into the two ring segments 30 and 31 as well as the central circular disk 32 serves in particular to save weight, the width of the ring segments being designed in such a way that a sufficiently large contact area to support the base 1 to be placed on Fig. 1 is available.

To stabilize the ring segments 30 and 31 and the central circular disk 32 with respect to one another, they are connected to one another via several radially extending connecting struts 35 and 36. The entire construction of the base plate can be designed as a welded construction. As a result, a high level of stability of the entire base plate 10 is achieved in particular.

In this case, the individual ring segments 30, 31 themselves can in turn be formed from individual segments which are arranged in different circumferential sections and are not designated in any more detail in the drawing. As mentioned above, the base plate 10 serves to hold the base plate 1 on the top, and via the cable securing devices of its posts 5, 6, 7 and 8 or the associated winches 15, 16, 17 and 18 for immovable fixation of the base plate 1 on a concrete slab 40, like this one exemplary Fig. 3 is removable.

It can be seen that the concrete slab 40, the thickness of which is approximately 6-8 cm, is provided with iron reinforcement elements 41, which protrude vertically upwards from the top side towards the standing slabs 10. These iron reinforcement elements 41 form due to their vertical protrusion at the same time the support elements for the base plate 10 and thus indirectly also for the base 1, which as in Fig. 1 shown, can be placed stationary on the base plate 10 and can be connected to it.

In order to achieve a firm hold of the base plate 10 together with the base 1 on the upwardly protruding iron reinforcement elements 41, the winches 15, 16, 17 and 18 with their corresponding cranks 19, 20, 21 and 22 are provided.

This shows Fig. 4 a perspective view of the stand plate 10 placed on the iron reinforcement elements 41 of the concrete slab 40, on which the stand base 1 is in turn fixedly mounted. It can be seen that the cable winches 15, 16, 17 and 18 are aligned in different orientations to each other, so that corresponding tensioning cables wound on the cable drums 19, 20, 21 and 22 can be tensioned to secure the cables against individual upwardly protruding iron reinforcement parts 41.

Thus, by tensioning the ropes in the sense of the in Fig. 4 The rope securing devices 50, 51, 52 and 53 shown by way of example, an immovable hold of the base plate 10 on the iron reinforcement parts 41 of the concrete slab 40 and thus also an immovable hold of the base 1 fixed on the base plate 10 can be achieved.

Since the stand base 1 is equipped with an anchor mast system during normal operation, a fall protection for people is guaranteed, since in particular the anchor mast system together with the stand base 1 is fixed immovably on the concrete slab 40 or its iron reinforcement elements 41.

Claims (4)

1. Anti-fall safeguard for persons with a support base (1), by which the anti-fall safeguard is able to be set up on an underlying surface consisting of single concrete slabs (40), wherein the concrete slabs (40) are provided with iron reinforcement elements (41) projecting upwards, and an anchor mast system connected to the support base (1), on the free upper end of which a piece of personal protection equipment (PPE) is attached, wherein two or more cable safeguards (50, 51, 52, 53) are provided, which are able to be brought into connection with the iron reinforcement elements (41) of the concrete slabs (40), and that the cable safeguards (50, 51, 52, 53) are tensible,
   characterized in that
   the supporting base (1) is secured by tensioning the cable safeguards (50, 51, 52, 53) on the underlying surface in an immovable fashion, wherein the cable safeguards (50, 51, 52, 53) are equipped with cable winches (15, 16, 17, 18) for tensioning, which are connected directly or indirectly with the supporting base (1) via pillars (5, 6, 7, 8) projecting upwards.
2. The anti-fall safeguard according to claim 1,
   characterized in that
   the cable safeguards (50, 51, 52, 53) with the cable winches (15, 16, 17, 18) and the upright pillars (5, 6, 7, 8) are part of a separate base plate (10), on which the supporting base (1) of the anti-fall safeguard is able to be set up in a stationary fashion.
3. The anti-fall safeguard according to claim 2,
   characterized in that
   the base plate (10) consists of multiple annular ring segments (30, 31), that the ring segments (30, 31) are configured to be polygonal or circular, and that the ring segments (30, 31) are connected with each other in stationary fashion via radially running connection braces (35, 36).
4. The anti-fall safeguard according to claim 3,
   characterized in that
   the ring segments (30, 31) have a radial distance from each other and provide with their surface sections pointing downwards the footprint for the supporting base (1) placed on the upper side.

Images